- 您现在的位置：买卖IC网 > PDF目录2002 > LT1341CG#TRPBF (Linear Technology)IC TXRX 5V RS232 SHUTDOWN 28SSOP PDF资料下载
参数资料
| 型号： | LT1341CG#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/8页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 5V RS232 SHUTDOWN 28SSOP |
| 标准包装： | 2,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
6
LT1341
PI FU CTIO S
U
UU
V–: Negative Supply Output (RS232 Drivers). V –
≈
–(2VCC – 2.5V). This pin requires an external charge
storage capacitor C
≥ 0.1F. To reduce supply ripple,
increase the size of the storage capacitor. With multiple
transceivers, the V + and V – pins may be paralleled into
common filter capacitors.
C1+, C1–, C2+, C2–: Commutating Capacitor Inputs. These
pins require two external capacitors C
≥ 0.2F: one from
C1+ to C1–, and another from C2+ to C2–. The capacitor’s
effective series resistance should be less than 2
. For
C
≥ 1F, low ESR tantalum capacitors work well in this
application, although small value ceramic capacitors may
be used with a minimal reduction in charge pump compli-
ance. When a 12V supply is available, C1 may be omitted.
Connect the 12V supply to C1+ and V +. The 12V supply
should be decoupled with a 0.1
F ceramic capacitor.
DRIVER IN: RS232 Driver Input Pins. These inputs are
TTL/CMOS compatible. Tie unused inputs to VCC.
DRIVER OUT: Driver Outputs at RS232 Voltage Levels.
Outputs are in a high impedance state when in shut-
down mode, VCC = 0V, or when the DRIVER DISABLE
pin is active. Outputs are fully short-circuit protected
from VOUT = V – + 30V to VOUT = V+ – 30V. Applying
higher voltages will not damage the device if the over-
drive is moderately current limited. Short circuits on
one output can load the power supply generator and
may disrupt the signal levels of the other outputs. The
driver outputs are protected against ESD to
±10kV for
human body model discharges.
RX IN: Receiver Inputs. These pins accept RS232 level
signals (
±30V) into a protected 5k terminating resistor.
The receiver inputs are protected against ESD to
±10kV for
human body model discharges. Each receiver provides
0.4V of hysteresis for noise immunity.
RX OUT: Receiver Outputs with TTL/CMOS Voltage Lev-
els. Outputs are in a high impedance state when in shut-
down mode to allow data line sharing. Outputs, including
LOW-Q RX OUT, are fully short-circuit protected to ground
or VCC with the power on, off, or in shutdown mode.
LOW Q-CURRENT RX IN: Low Power Receiver Input. This
special receiver remains active when the part is in shut-
down mode, consuming typically 60
A. This receiver has
the same input and protection characteristics as the other
receivers.
LOW Q-CURRENT RX OUT: Low Power Receiver Output.
This pin produces the same TTL/CMOS output voltage
levels with slightly decreased speed and short-circuit
current.
ESD PROTECTIO
U
The RS232 line inputs of the LT1341 have on-chip protec-
tion from ESD transients up to
±10kV. The protection
structures act to divert the static discharge safely to
system ground. In order for the ESD protection to function
effectively, the power supply and ground pins of the
LT1341 must be connected to ground through low imped-
ances. The power supply decoupling capacitors and charge
pump storage capacitors provide this low impedance in
normal application of the circuit. The only constraint is that
low ESR capacitors must be used for bypassing and
charge storage. ESD testing must be done with pins VCC,
V+, V – and GND shorted to ground or connected with low
ESR capacitors.
ESD Test Circuit
LT1341 ESD TC
5V VCC
0.1
F
0.2
F
0.1
F
RS232
LINE PINS
PROTECTED
TO
±10kV
LT1341
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN (LOW-Q)
ON/OFF
NC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0.2
F
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT (LOW-Q)
V–
V+
0.1
F
GND
DRIVER DISABLE
NC
相关PDF资料 |
PDF描述 |
|---|---|
| LT1342CG | IC TXRX 5V RS232 W/3VLOGC 28SSOP |
| LT1794CSW#PBF | IC OPAMP 200MHZ DUAL 20-SOIC |
| LT6301IFE | IC XDSL LINE DRIVER DUAL 28TSSOP |
| LT8500IUHH#TRPBF | IC PWM GENERATOR 56-QFN |
| LTC1096IN8#PBF | IC A/D CONV 8BIT SRL IN/OUT 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1341CN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| LT1341CNW | 功能描述:IC TXRX 5V RS232 W/SHTDWN 28DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1341CNW#PBF | 功能描述:IC TXRX 5V RS232 W/SHTDWN 28DIP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1341CS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| LT1341CSW | 功能描述:IC TXRX 5V RS232 W/SHTDWN 28SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1 系列:- 类型:线路收发器 驱动器/接收器数:5/3 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:Digi-Reel® 产品目录页面:918 (CN2011-ZH PDF) 其它名称:296-25096-6 |
发布紧急采购，3分钟左右您将得到回复。